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BaseRepresentation
bin10011100011000001
311001211101
4103203001
510030230
61414401
7452266
oct234301
9131741
1080065
1155177
123a401
132a59b
142126d
1518aca
hex138c1

80065 has 8 divisors (see below), whose sum is σ = 97920. Its totient is φ = 62832.

The previous prime is 80051. The next prime is 80071. The reversal of 80065 is 56008.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80065 - 211 = 78017 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216 + ... + 454.

It is an arithmetic number, because the mean of its divisors is an integer number (12240).

280065 is an apocalyptic number.

It is an amenable number.

80065 is a deficient number, since it is larger than the sum of its proper divisors (17855).

80065 is a wasteful number, since it uses less digits than its factorization.

80065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 80065 is about 282.9575939960. The cubic root of 80065 is about 43.1003604960.

The spelling of 80065 in words is "eighty thousand, sixty-five".

Divisors: 1 5 67 239 335 1195 16013 80065